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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Notional Amounts of Outstanding Derivative Positions) (Details) - USD ($) $ in Thousands | Nov. 30, 2017 | Aug. 31, 2017
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Cash Flow Hedging [Member] |  |
Derivative [Line Items] |  |
Derivative Liability, Notional Amount | $ 73,687 | $ 75,512
Union Bank [Member] | Cash Flow Hedging [Member] |  |
Derivative [Line Items] |  |
Derivative Liability, Notional Amount | 35,700 | 35,700
Citibank [Member] | Cash Flow Hedging [Member] |  |
Derivative [Line Items] |  |
Derivative Liability, Notional Amount | 25,063 | 26,088
Scotiabank [Member] | Cash Flow Hedging [Member] |  |
Derivative [Line Items] |  |
Derivative Liability, Notional Amount | 12,924 | $ 13,724
Colombia Subsidiary [Member] | Citibank [Member] | Forward Foreign Exchange Contract 1 [Member] | Not Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] |  |
Derivative [Line Items] |  |
Derivative Liability, Notional Amount | 1,000 |
Colombia Subsidiary [Member] | Citibank [Member] | Forward Foreign Exchange Contract 2 [Member] | Not Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] |  |
Derivative [Line Items] |  |
Derivative Liability, Notional Amount | 1,000 |
Colombia Subsidiary [Member] | Citibank [Member] | Forward Foreign Exchange Contract 3 [Member] | Not Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] |  |
Derivative [Line Items] |  |
Derivative Liability, Notional Amount | 1,000 |
Colombia Subsidiary [Member] | Citibank [Member] | Forward Foreign Exchange Contract 4 [Member] | Not Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] |  |
Derivative [Line Items] |  |
Derivative Liability, Notional Amount | $ 1,000 |

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